After the Canterlot wedding Princess Luna begins to feel anger towards her nice and nephew. She begins to see flash backs of her old friends. And it does not go away when King Sombra is defeated. Although when she looks deeper into her past she reveals to herself the Truth about Nightmare Moon, King Sombra, Queen Chrysalis and Discord.
OC:
Prince Shade, Princess Papillon, Genaral Mantis, Baris Alan, Queen Amothist, King Rubyis.
Other: Princess Amore, Princess Celestia, Cadence, Shining Armor, Changelings, Crystal Pony's, Nightmare Moon, Starswirl the bearded, & Clover the Clever.